In January 2016 Amazon was fined by the US Department of Labour for failing to report injuries in one of its warehouses.
A citation issued by the federal safety regulators says the online retailer failed to report at least 26 work-related illnesses and injuries at a New Jersey warehouse in 2015.
The fine came after a multi-month inspection by the Occupational Safety and Health Administration found that Amazon did not report workplace injuries and did not supply protective equipment to workers, who were exposed to dangers including amputation.
The company was fined $7,000.
A spokesperson for Amazon, told US news network CBS, "We take safety very seriously, we do not agree with the findings and will be contesting the citation".
OSHA said Amazon workers were exposed to "risk factors including stress from repeated bending at the waist and repeated exertions, and standing during entire shifts up to 10 hours, four days a week and sometimes including mandatory overtime shifts. Also, the on-site medical unit provided medical care beyond what was allowed by their licensing and certification, without the supervision of a board certified qualified medical professional licensed to practice independently."